Atomic Nucleus: The symbol for a certain isotope of polonium is 
Po. How many neutrons are there in the nucleus of this isotope?
A. 84
B. 130
C. 214
D. 298
E. 314
Answer: B
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Determine the average kinetic energy per atom due to thermal vibrations in a solid at 1000 K. You can assume that the heat capacity at constant volume for the solid is equal to the classical limit of 3R for all temperatures, and that the material is at constant volume during heating. Express your answer in eV/atom.
What will be an ideal response?
Consider the ratio of the surface area of a sphere to its volume. What happens to this ratio if the diameter of the sphere increases by a factor of 3?
A. Decreases by a factor of 9 B. Increases by a factor of 3 C. Decreases by a factor of 3 D. Increases by a factor of 9 E. Stays the same
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Indicate whether the statement is true or false
By what factor is the capacitance of a metal sphere multiplied if its volume is tripled?
1.3 2.31/3 3.1 4.3-1/3 5.13